451 lines
12 KiB
C
451 lines
12 KiB
C
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/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "audio_hw_default"
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//#define LOG_NDEBUG 0
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#include <errno.h>
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#include <pthread.h>
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#include <stdint.h>
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#include <sys/time.h>
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#include <cutils/log.h>
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#include <hardware/hardware.h>
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#include <system/audio.h>
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#include <hardware/audio.h>
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struct stub_audio_device {
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struct audio_hw_device device;
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};
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struct stub_stream_out {
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struct audio_stream_out stream;
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};
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struct stub_stream_in {
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struct audio_stream_in stream;
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};
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static uint32_t out_get_sample_rate(const struct audio_stream *stream)
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{
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return 44100;
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}
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static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate)
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{
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return 0;
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}
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static size_t out_get_buffer_size(const struct audio_stream *stream)
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{
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return 4096;
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}
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static uint32_t out_get_channels(const struct audio_stream *stream)
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{
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return AUDIO_CHANNEL_OUT_STEREO;
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}
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static audio_format_t out_get_format(const struct audio_stream *stream)
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{
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return AUDIO_FORMAT_PCM_16_BIT;
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}
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static int out_set_format(struct audio_stream *stream, audio_format_t format)
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{
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return 0;
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}
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static int out_standby(struct audio_stream *stream)
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{
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return 0;
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}
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static int out_dump(const struct audio_stream *stream, int fd)
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{
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return 0;
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}
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static int out_set_parameters(struct audio_stream *stream, const char *kvpairs)
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{
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return 0;
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}
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static char * out_get_parameters(const struct audio_stream *stream, const char *keys)
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{
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return strdup("");
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}
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static uint32_t out_get_latency(const struct audio_stream_out *stream)
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{
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return 0;
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}
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static int out_set_volume(struct audio_stream_out *stream, float left,
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float right)
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{
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return 0;
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}
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static ssize_t out_write(struct audio_stream_out *stream, const void* buffer,
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size_t bytes)
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{
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/* XXX: fake timing for audio output */
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usleep(bytes * 1000000 / audio_stream_frame_size(&stream->common) /
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out_get_sample_rate(&stream->common));
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return bytes;
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}
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static int out_get_render_position(const struct audio_stream_out *stream,
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uint32_t *dsp_frames)
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{
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return -EINVAL;
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}
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static int out_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
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{
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return 0;
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}
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static int out_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
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{
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return 0;
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}
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static int out_get_next_write_timestamp(const struct audio_stream_out *stream,
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int64_t *timestamp)
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{
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return -EINVAL;
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}
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/** audio_stream_in implementation **/
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static uint32_t in_get_sample_rate(const struct audio_stream *stream)
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{
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return 8000;
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}
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static int in_set_sample_rate(struct audio_stream *stream, uint32_t rate)
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{
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return 0;
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}
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static size_t in_get_buffer_size(const struct audio_stream *stream)
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{
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return 320;
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}
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static uint32_t in_get_channels(const struct audio_stream *stream)
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{
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return AUDIO_CHANNEL_IN_MONO;
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}
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static audio_format_t in_get_format(const struct audio_stream *stream)
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{
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return AUDIO_FORMAT_PCM_16_BIT;
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}
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static int in_set_format(struct audio_stream *stream, audio_format_t format)
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{
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return 0;
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}
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static int in_standby(struct audio_stream *stream)
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{
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return 0;
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}
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static int in_dump(const struct audio_stream *stream, int fd)
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{
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return 0;
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}
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static int in_set_parameters(struct audio_stream *stream, const char *kvpairs)
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{
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return 0;
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}
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static char * in_get_parameters(const struct audio_stream *stream,
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const char *keys)
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{
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return strdup("");
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}
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static int in_set_gain(struct audio_stream_in *stream, float gain)
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{
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return 0;
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}
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static ssize_t in_read(struct audio_stream_in *stream, void* buffer,
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size_t bytes)
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{
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/* XXX: fake timing for audio input */
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usleep(bytes * 1000000 / audio_stream_frame_size(&stream->common) /
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in_get_sample_rate(&stream->common));
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return bytes;
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}
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static uint32_t in_get_input_frames_lost(struct audio_stream_in *stream)
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{
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return 0;
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}
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static int in_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
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{
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return 0;
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}
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static int in_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect)
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{
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return 0;
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}
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static int adev_open_output_stream(struct audio_hw_device *dev,
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audio_io_handle_t handle,
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audio_devices_t devices,
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audio_output_flags_t flags,
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struct audio_config *config,
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struct audio_stream_out **stream_out)
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{
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struct stub_audio_device *ladev = (struct stub_audio_device *)dev;
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struct stub_stream_out *out;
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int ret;
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out = (struct stub_stream_out *)calloc(1, sizeof(struct stub_stream_out));
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if (!out)
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return -ENOMEM;
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out->stream.common.get_sample_rate = out_get_sample_rate;
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out->stream.common.set_sample_rate = out_set_sample_rate;
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out->stream.common.get_buffer_size = out_get_buffer_size;
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out->stream.common.get_channels = out_get_channels;
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out->stream.common.get_format = out_get_format;
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out->stream.common.set_format = out_set_format;
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out->stream.common.standby = out_standby;
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out->stream.common.dump = out_dump;
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out->stream.common.set_parameters = out_set_parameters;
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out->stream.common.get_parameters = out_get_parameters;
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out->stream.common.add_audio_effect = out_add_audio_effect;
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out->stream.common.remove_audio_effect = out_remove_audio_effect;
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out->stream.get_latency = out_get_latency;
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out->stream.set_volume = out_set_volume;
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out->stream.write = out_write;
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out->stream.get_render_position = out_get_render_position;
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out->stream.get_next_write_timestamp = out_get_next_write_timestamp;
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*stream_out = &out->stream;
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return 0;
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err_open:
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free(out);
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*stream_out = NULL;
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return ret;
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}
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static void adev_close_output_stream(struct audio_hw_device *dev,
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struct audio_stream_out *stream)
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{
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free(stream);
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}
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static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs)
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{
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return -ENOSYS;
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}
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static char * adev_get_parameters(const struct audio_hw_device *dev,
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const char *keys)
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{
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return NULL;
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}
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static int adev_init_check(const struct audio_hw_device *dev)
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{
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return 0;
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}
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static int adev_set_voice_volume(struct audio_hw_device *dev, float volume)
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{
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return -ENOSYS;
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}
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static int adev_set_master_volume(struct audio_hw_device *dev, float volume)
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{
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return -ENOSYS;
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}
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static int adev_get_master_volume(struct audio_hw_device *dev,
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float *volume)
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{
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return -ENOSYS;
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}
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static int adev_set_mode(struct audio_hw_device *dev, audio_mode_t mode)
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{
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return 0;
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}
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static int adev_set_mic_mute(struct audio_hw_device *dev, bool state)
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{
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return -ENOSYS;
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}
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static int adev_get_mic_mute(const struct audio_hw_device *dev, bool *state)
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{
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return -ENOSYS;
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}
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static size_t adev_get_input_buffer_size(const struct audio_hw_device *dev,
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const struct audio_config *config)
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{
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return 320;
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}
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static int adev_open_input_stream(struct audio_hw_device *dev,
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audio_io_handle_t handle,
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audio_devices_t devices,
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struct audio_config *config,
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struct audio_stream_in **stream_in)
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{
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struct stub_audio_device *ladev = (struct stub_audio_device *)dev;
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struct stub_stream_in *in;
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int ret;
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in = (struct stub_stream_in *)calloc(1, sizeof(struct stub_stream_in));
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if (!in)
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return -ENOMEM;
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in->stream.common.get_sample_rate = in_get_sample_rate;
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in->stream.common.set_sample_rate = in_set_sample_rate;
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in->stream.common.get_buffer_size = in_get_buffer_size;
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in->stream.common.get_channels = in_get_channels;
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in->stream.common.get_format = in_get_format;
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in->stream.common.set_format = in_set_format;
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in->stream.common.standby = in_standby;
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in->stream.common.dump = in_dump;
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in->stream.common.set_parameters = in_set_parameters;
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in->stream.common.get_parameters = in_get_parameters;
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in->stream.common.add_audio_effect = in_add_audio_effect;
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in->stream.common.remove_audio_effect = in_remove_audio_effect;
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in->stream.set_gain = in_set_gain;
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in->stream.read = in_read;
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in->stream.get_input_frames_lost = in_get_input_frames_lost;
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*stream_in = &in->stream;
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return 0;
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err_open:
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free(in);
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*stream_in = NULL;
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return ret;
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}
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static void adev_close_input_stream(struct audio_hw_device *dev,
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struct audio_stream_in *in)
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{
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return;
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}
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static int adev_dump(const audio_hw_device_t *device, int fd)
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{
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return 0;
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}
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static int adev_close(hw_device_t *device)
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{
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free(device);
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return 0;
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}
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static uint32_t adev_get_supported_devices(const struct audio_hw_device *dev)
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{
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return (/* OUT */
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AUDIO_DEVICE_OUT_EARPIECE |
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AUDIO_DEVICE_OUT_SPEAKER |
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AUDIO_DEVICE_OUT_WIRED_HEADSET |
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AUDIO_DEVICE_OUT_WIRED_HEADPHONE |
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AUDIO_DEVICE_OUT_AUX_DIGITAL |
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AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET |
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AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET |
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AUDIO_DEVICE_OUT_ALL_SCO |
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AUDIO_DEVICE_OUT_DEFAULT |
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/* IN */
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AUDIO_DEVICE_IN_COMMUNICATION |
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AUDIO_DEVICE_IN_AMBIENT |
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AUDIO_DEVICE_IN_BUILTIN_MIC |
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AUDIO_DEVICE_IN_WIRED_HEADSET |
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AUDIO_DEVICE_IN_AUX_DIGITAL |
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AUDIO_DEVICE_IN_BACK_MIC |
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AUDIO_DEVICE_IN_ALL_SCO |
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AUDIO_DEVICE_IN_DEFAULT);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int adev_open(const hw_module_t* module, const char* name,
|
||
|
|
hw_device_t** device)
|
||
|
|
{
|
||
|
|
struct stub_audio_device *adev;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
adev = calloc(1, sizeof(struct stub_audio_device));
|
||
|
|
if (!adev)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
adev->device.common.tag = HARDWARE_DEVICE_TAG;
|
||
|
|
adev->device.common.version = AUDIO_DEVICE_API_VERSION_1_0;
|
||
|
|
adev->device.common.module = (struct hw_module_t *) module;
|
||
|
|
adev->device.common.close = adev_close;
|
||
|
|
|
||
|
|
adev->device.get_supported_devices = adev_get_supported_devices;
|
||
|
|
adev->device.init_check = adev_init_check;
|
||
|
|
adev->device.set_voice_volume = adev_set_voice_volume;
|
||
|
|
adev->device.set_master_volume = adev_set_master_volume;
|
||
|
|
adev->device.get_master_volume = adev_get_master_volume;
|
||
|
|
adev->device.set_mode = adev_set_mode;
|
||
|
|
adev->device.set_mic_mute = adev_set_mic_mute;
|
||
|
|
adev->device.get_mic_mute = adev_get_mic_mute;
|
||
|
|
adev->device.set_parameters = adev_set_parameters;
|
||
|
|
adev->device.get_parameters = adev_get_parameters;
|
||
|
|
adev->device.get_input_buffer_size = adev_get_input_buffer_size;
|
||
|
|
adev->device.open_output_stream = adev_open_output_stream;
|
||
|
|
adev->device.close_output_stream = adev_close_output_stream;
|
||
|
|
adev->device.open_input_stream = adev_open_input_stream;
|
||
|
|
adev->device.close_input_stream = adev_close_input_stream;
|
||
|
|
adev->device.dump = adev_dump;
|
||
|
|
|
||
|
|
*device = &adev->device.common;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct hw_module_methods_t hal_module_methods = {
|
||
|
|
.open = adev_open,
|
||
|
|
};
|
||
|
|
|
||
|
|
struct audio_module HAL_MODULE_INFO_SYM = {
|
||
|
|
.common = {
|
||
|
|
.tag = HARDWARE_MODULE_TAG,
|
||
|
|
.module_api_version = AUDIO_MODULE_API_VERSION_0_1,
|
||
|
|
.hal_api_version = HARDWARE_HAL_API_VERSION,
|
||
|
|
.id = AUDIO_HARDWARE_MODULE_ID,
|
||
|
|
.name = "Default audio HW HAL",
|
||
|
|
.author = "The Android Open Source Project",
|
||
|
|
.methods = &hal_module_methods,
|
||
|
|
},
|
||
|
|
};
|